Parties can now coordinate with candidates by using money in ways that they were previously banned from doing.
Attempts to prevent corruption with campaign finance laws has failed. We may need to rethink it. Money has found a way to affect politics even with campaign finance laws. If anything, the restrictions have made the super wealthy more powerful!
Making campaign finance more complicated with more regulation makes it harder for the smaller players to legally take part. The super wealthy have the means to figure out ways around regulation.